Search results
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Title
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A study of surface modification effect of hemp fibers on the bulk material properties of hemp-poly (lactic acid) composites: thermal stability, mechanical, therm0-mechanical and biodegradability
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Author
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Oza, Shubhashini
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Date Created
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2013
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Subjects--Topical
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Civil engineering, Sustainability, Environmental engineering
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Description
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Biocomposites made with, natural fiber and bio-based polymers, have many advantages over their synthetic counterparts including low cost, low density, high strength and biodegradability. However, some biocomposites can present problems due to high...
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Title
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ENGINEERED WATER REPELLENCY FOR INFILTRATION CONTROL IN COAL FLY ASH
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Author
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Feyyisa, Jenberu
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Date Created
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2017
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Subjects--Topical
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Civil engineering, Environmental engineering
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Description
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In 2014 approximately 47% of the 190 million short tons of coal combustion product (CCP) was recycled. As a construction material, coal fly ash (CFA) finds considerable use as a partial replacement for Portland cement, as structural fill, and as a...
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Title
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FINITE ELEMENT STUDIES OF ORTHOGONAL MACHINING OF ALUMINUM ALLOY A2024-T351
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Author
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Patel, Jaimeen
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Date Created
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2018
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Subjects--Topical
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Mechanical engineering, Mechanics
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Description
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In this work, a new machining model using the commercial finite element software ABAQUS is developed. The model regards material separation, chip serration and breakage as ductile fracture processes where energy is required to form new surfaces. T...
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Title
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Geotechnical Controls on Organo-Silane Modification of Soils and Coal Combustion Fly Ash
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Author
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Keatts, Matthew
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Date Created
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2014
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Subjects--Topical
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Civil engineering, Geotechnical engineering
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Description
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Organo-silane (OS) surface modification works by chemically altering the surface of silica based materials and rendering them hydrophobic (waterproof). Limited research is present in the literature addressing the use of OS modified soils as an inf...
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Title
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Mobilization of oxyanion forming trace elements from fly ash based geopolymer concrete
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Author
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Sanusi, Olanrewaju
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Date Created
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2012
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Subjects--Topical
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Environmental engineering
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Description
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The suitability of fly ash based geopolymer concrete as a replacement for ordinary Portland cement (OPC) concrete depends on the mobility of elements from the material. Due to the alkaline nature of geopolymer concrete, there is a potential for th...
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Title
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RAPID AND DYNAMIC LOAD TESTING OF INSTRUMENTED PZ27 STEEL SHEET PILES
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Author
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Rice, Corey
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Date Created
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2020
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Subjects--Topical
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Civil engineering
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Description
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Pile foundations are typically used for structures underlain by weaker soils in order to increase the soil resistance and, subsequently, the axial capacity. In bridge abutments, sheet piles are typically used as facing elements for soil retention ...
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Title
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Slope Stability Analysis of Embankment Fill Material from North Carolina Coastal Region
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Author
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McGovern, Ashley
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Date Created
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2016
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Subjects--Topical
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Civil engineering, Geotechnical engineering
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Description
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This research involved a comprehensive experimental program was carried out to study compaction characteristics and associated engineering properties of test soils from three actual NCDOT highway projects located within the coastal geologic region...
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Title
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Synthesis and Reactivity of N-Heterocyclic Chalcogenone Complexes of Copper and Silver
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Author
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Allen, Alexander
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Date Created
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2018
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Subjects--Topical
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Chemistry, Inorganic, Chemistry, Organic, Analytical chemistry
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Description
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This presentation outlines the synthesis and characterization of several unusual two-coordinate copper(I) and silver(I) complexes supported by bulky N-heterocyclic thione (NHT) and selone (NHSe) ligands. More specifically, copper(I) complexes of t...